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86 lines
2.4 KiB
86 lines
2.4 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2020 Vladimir Fonov <vladimir.fonov@gmail.com>
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// 2013 Alec Jacobson <alecjacobson@gmail.com>
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// 2014 Christian Schüller <schuellchr@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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//
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#ifndef IGL_EMBREE_EMBREE_DEVICE_H
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#define IGL_EMBREE_EMBREE_DEVICE_H
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#include <embree3/rtcore.h>
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#include <iostream>
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namespace igl
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{
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namespace embree
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{
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/// keep track of embree device instance
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struct EmbreeDevice
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{
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RTCDevice embree_device;
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int embree_device_cntr;
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static EmbreeDevice & instance()
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{
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static EmbreeDevice s;
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return s;
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} // instance
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EmbreeDevice(const EmbreeDevice &) = delete;
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EmbreeDevice & operator = (const EmbreeDevice &) = delete;
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static RTCDevice get_device(const char *config=nullptr)
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{
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return instance().get(config);
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}
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static void release_device(void)
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{
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instance().release();
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}
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private:
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EmbreeDevice():embree_device(nullptr),embree_device_cntr(0) {}
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~EmbreeDevice()
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{
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if(embree_device)
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rtcReleaseDevice(embree_device);
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}
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RTCDevice get(const char *config=nullptr)
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{
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if(!embree_device)
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{
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embree_device = rtcNewDevice (config);
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if(rtcGetDeviceError (embree_device) != RTC_ERROR_NONE)
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std::cerr << "Embree: An error occurred while initializing embree core!" << std::endl;
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#ifdef IGL_VERBOSE
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else
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std::cerr << "Embree: core initialized." << std::endl;
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#endif
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}
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++embree_device_cntr;
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return embree_device;
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}
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void release()
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{
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if(!--embree_device_cntr) {
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rtcReleaseDevice (embree_device);
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embree_device = nullptr;
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#ifdef IGL_VERBOSE
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std::cerr << "Embree: core released." << std::endl;
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#endif
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}
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}
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};
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}
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}
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#endif // IGL_EMBREE_EMBREE_DEVICE_H
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